JP2944581B2 - Microwave oven power cutoff - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device for a microwave oven, and more particularly, to a microwave oven for disconnecting an out panel with a power cord inserted when repairing a malfunction of the microwave oven. The present invention relates to a power cutoff device for a microwave oven that automatically cuts off applied power.

[0002]

2. Description of the Related Art Conventionally, this kind of microwave oven is shown in FIGS.
As shown in the figure, the cavity 10, the front panel 20,
A cooking chamber 60 having a predetermined space for heating and cooking the food by combining the back panel 30, the base panel 40, and the out panel 50, and a food placed on the upper part while being powered and driven (for example, heating cooking) A turntable 70 rotatably provided on the bottom surface of the cooking chamber 60 so as to rotate the object, a door 80 for opening and closing the opening of the cooking chamber 60, and a magnetron for setting a cooking selection mode or not shown. And a control unit 90 for operating the above.

In order to drive the microwave oven configured as described above, first, the door is opened, food is placed on a turntable 70 provided on the bottom surface in the cooking chamber 60, and the door 80 is reopened. When the cooking selection mode of the control unit 90 is operated according to the properties of the object to be cooked while the power cord 100 is inserted into a socket (not shown), the turntable 70 is rotated in one direction by the power supply. When microwaves having a frequency of 2.45 GHz are radiated to food placed on the turntable 70 in the cooking chamber 60 through a waveguide (not shown) by the oscillation operation of the magnetron, the energy of the microwaves is reduced by a dielectric material. Thermal energy conversion is performed in the food to heat the food.

[0004]

By the way, in the above-mentioned conventional microwave oven configured as described above, the cord is unplugged when the out panel is separated while the power cord is plugged in when repairing a malfunction of the device. Work must be performed afterwards.
Therefore, there is a problem that the workability and efficiency are not good.

Accordingly, the present invention has been made to solve the above-mentioned various problems, and an object of the present invention is to provide:
It is an object of the present invention to provide a power supply shut-off device for a microwave oven in which even if an out panel is cut off while a power cord is inserted when a malfunction of a device is repaired, a power supply is automatically cut off and repair is possible.

[0006]

SUMMARY OF THE INVENTION In a microwave oven provided with a detachable out panel on one side thereof, a push iron bar provided at a predetermined portion of the out panel and a contact and release of the push iron bar are provided. Along with the switch means provided at a predetermined portion of the cavity by turning on and off the power supply inside the device, and when assembling the out panel, the switch means is opened by a pushing operation of the push rod means to push the push rod means. so as to be in contact with each other contact of the switch means, to cover the switch means when for dissecting out panel, is composed of a switch cover means provided at a predetermined portion of said cavity, said press
The iron bar means is insulated at a predetermined location on its inner surface.
Connected to the member and the three power supply lines of the switch means, respectively.
Place on the lower surface of the insulating member so that power is supplied to the equipment.
And a plurality of contact plates attached at regular intervals.
Characterized in that it is.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a microwave oven according to an embodiment of the present invention; In the figure, the same parts as those of the conventional configuration are denoted by the same names and reference numerals, and overlapping description will be omitted.

As shown in FIGS. 3 to 6, a power cutoff device shown as an embodiment of the present invention includes a push iron bar means 210 provided at a predetermined portion inside an out panel 50 and a push iron bar means 210. A switch means 220 provided at a predetermined position on the outer surface of the cavity 10 so as to turn on and off the power supply to the device at the time of connection and disconnection;
When the out panel 50 is assembled, the switch means 220 is opened while being slid to one side by the pushing operation of the push iron bar means 210, and the push iron bar means 210 connects or disconnects the contacts of the switch means 220 to each other. And a switch cover means 230 provided at a predetermined position on the outer surface of the cavity 10 to cover the switch means 220 when the panel 50 is separated.

As shown in FIGS. 3 and 5, the push iron bar means 210 is connected to an insulating member 211 attached to the inner side surface of the ceiling of the out panel 50 and a power supply line of the switch means 220, respectively. A conductive cathode, an anode, a ground contact plate 212 attached to the lower surface of the insulating member 211 at predetermined intervals so that power is supplied to the insulating member 211,
213 and 214.

The switch means 220 includes a cathode, an anode, and ground contact plates 212 and 213 of the pressed iron bar means 210.
The switch body 221 is connected to the first surface of the switch body 221 at a predetermined interval so as to be connected with the contact of the first member 214.
, Anode, and ground contacts 222, 223, and 224 and the second cathode, anode, and ground contacts 222a, 223a, and 22
4a is projected. That is, as shown in FIG. 4, the first cathode, anode, and ground contacts 222, 223, and 224 are electrically connected to three power lines of the power cord 100, and the remaining second cathode, anode, and ground are provided. Contacts 222a, 22
Reference numerals 3a and 224a denote a power supply 3 for electronic components in a device (not shown).
It is electrically connected to the wire.

On the other hand, the switch cover means 230 is
First and second guide rails 231 fixed to the outer surface of the upper surface of the cavity 10 at a predetermined interval.
2 and supported by the first and second guide rails 231 and 232 so as to cover or open the switch means 220 while being slid back and forth while being guided by the first and second guide rails 231 and 232. Cover member 233
When the out panel 50 is cut off, the cover member 233 is slid forward to
First and second springs 234 and 235 connected between the back panel 30 and the cover member 233 so as to cover
Consists of At this time, the cover member 233 is made of an insulator through which no current flows. Further, one side of the spring 234 is connected to spring fixing portions 230a formed at both ends of the switch cover means 230, respectively.

On the other hand, the cover member 233 is provided on the outer surface of the ceiling of the cavity 10 with the first and second switches 2.
The first and second guide rails 2 by the resilience of 34, 235
31 and 232, at least two or more stop means 240 so as to be stopped at a position where the entire area of the switch means 220 can be properly covered when being slid forward.
Is provided. That is, the stopping means 240
The cavity 10 is integrally formed on the outer surface of the ceiling by a forming process or is fixed in a pin type.

The operation and effects of the power cutoff device for a microwave oven constructed as described above as an embodiment of the present invention will be described below. When the fastening screw (not shown) located on the outer edge of the out panel 50 is released to repair a failure of the device, and the out panel 50 is pulled rightward as shown in FIG. By being separated from panel 30, not only the ceiling and both side surfaces of cavity 10 are exposed to the outside, but also electronic components (not shown) provided around cavity 10 are exposed to the outside.

Further, when the out panel 50 is cut off, the pressed iron bar means 210 fixed to the inner surface of the ceiling of the out panel 50 is fixed to the outer surface of the ceiling of the cavity 10 while being moved rearward together with the out panel 50. The contact between the switch means 220 and the switch cover means 230 is released. That is, the pressing iron bar means 21
0, a cathode, an anode, and ground contact plates 212, 213, and 2 attached to the lower surface of the insulating member 211 at predetermined intervals.
Reference numeral 14 denotes a pair of first and second cathodes, anodes, and ground contacts 222 and 223 projecting from the upper surface of the switch body 221 of the switch means 220 when the push iron bar means 210 is moved.
The first cathodes electrically connected to the three power lines of the power cord 100, respectively, by separating electrical contact from the first cathodes 224, 222a, 223a, and 224a;
The anode and the ground contact plates 222, 223, and 224 are disconnected from the second cathode, the anode, and the ground contacts 222a, 223a, and 224a that are electrically connected to three power lines such as electronic components. Becomes

At this time, the current flowing through the first cathode, the anode, and the ground contacts 222, 223, and 224 via the power cord 100 inserted into a socket (not shown) is applied to the second cathode,
Since the current does not flow to the anode and the ground contacts 222a, 223a, and 224a, the cord 100 does not have to be pulled out when repairing a malfunction of the device. The cover member 233 of the switch cover means 230 includes first and second guide rails 231 and 232 fixed to the outer surface of the ceiling of the cavity 10 when the push iron bar means is moved.
And is slid rearward by the resilient force of first and second springs 234 and 235, both ends of which are fixed between one side of both sides of the cover member 233 and one side of the back of the back panel 30. Then, the switch means 220 is covered.

At this time, since the cover member 233 is made of an insulating material, the switch means 220 is used when repairing a failure of the device.
First cathode, anode and ground contacts 222, 223, 224
Current flowing through the second cathode, the anode, the ground contact 222a,
It does not flow to 223a and 224a. Therefore, when the out panel 50 is separated while the power cord 100 is inserted to repair a failure of an electronic component or the like in the device, the repair can be performed without pulling out the cord.

[0017]

As described above, according to the power supply device for a microwave oven according to the present invention, when the out panel is separated, the contact plate provided on the out panel turns off the operation of the switch means and the switch cover means. Has a structure that covers the switch means while being automatically moved by the spring action of the spring, so when repairing equipment failure with the power cord plugged in, there is no need to pull out the cord and work It has an excellent effect that easiness, efficiency and certainty of the process are improved.

[Brief description of the drawings]

FIG. 1 is a front perspective view of a conventional microwave oven.

FIG. 2 is a rear perspective view of a conventional microwave oven.

FIG. 3 is an exploded perspective view showing a back surface of an out panel and a back panel to which the power cutoff device according to the present invention is applied.

FIG. 4 is a perspective view showing a power cutoff device of the present invention.

FIG. 5 is a side sectional view of a main part showing an on-operation state of the power cutoff device when assembling the out panel of the present invention.

FIG. 6 is a side sectional view of a main part showing an off operation state of the power cutoff device when the out panel of the present invention is separated.

[Explanation of symbols]

 REFERENCE SIGNS LIST 50 Out panel 1000 Power cord 210 Push iron bar means 211 Insulating member 212 Cathode 213 Anode 214 Ground contact plate 220 Switch means 221 Switch body 222 First cathode 223 First anode 224 First ground contact 222a Second cathode 223a No. 2 anode 224a Second ground contact 230 Switch cover means 231 First guide rail 232 Second guide rail 233 Cover member 234 First spring 235 Second spring

Claims (4)

(57) [Claims] 1. A microwave oven provided with a detachable out panel on one side thereof, wherein a push iron bar means provided at a predetermined portion of the out panel and an inside of the device accompanying the contact and release of the push iron bar means Switch means provided at a predetermined portion of the cavity by turning on and off the power supply to the switch; and when assembling the out panel, the switch means is opened by a pushing operation of the push iron bar means so that the push iron rod means contacts the switch means. And switch cover means provided at a predetermined portion of the cavity so as to cover the switch means when the out panel is cut off , and the push iron bar means is provided at a predetermined portion on the inner surface thereof. Adhered to
Connected to the insulation member and the three wires of the power supply of the switch means
So that power is supplied to the equipment.
From a plurality of contact plates attached to the surface at predetermined intervals
Power cutoff device of a microwave oven, characterized in that constructed. 2. A switch body, wherein a plurality of contacts are formed at a predetermined interval on a switch body thereof so as to be connected to a plurality of contact plates of a push iron bar means. Item 2. The power supply cutoff device for a microwave oven according to Item 1. 3. The switch cover means includes: a plurality of guide rails fixed to a predetermined portion of a cavity at a predetermined interval; and a cover for covering the switch means while being guided back and forth by the guide rails. Or a cover member that is opened and supported by the guide rail, and a plurality of cover members that are connected between the back panel and the cover member so as to cover the switch means by sliding the cover member when the out panel is separated. 2. The power cutoff device for a microwave oven according to claim 1, wherein the power cutoff device comprises: 4. The power cutoff device for a microwave oven according to claim 3 , wherein the cover member is made of an insulator.